Six Bullets by Simon Dunn

Six bullets.

Seven terrorists.

Everyone else on board was dead.

The Bjørg Istad is the world’s largest container ship, and she’s on her maiden voyage. Trond Nystrand has stowed away, running from a terrible secret. Halfway to his new life, Trond wakes up to the sound of gunfire, heralding the arrival of seven terrorists intent on wreaking havoc.